MRC Technologies

Heavy Machinery and Crusher Repair Facility

5-1/2' Symons Standard Crusher (AE4077) - Used - Disassembled and Inspected


  • Fabricated mainframe.
  • External mainframe pin design.
  • Arms appear very good with no sign of cracking or weld repair.
  • Outer eccentric bushing excellent.
  • Liners replaced.

 Adjustment Ring:

  • Adjustment ring is sitting level with good height.
  • Threads are approximately 70% of new, with good life remaining.  No damage is apparent.

Adjustment Cap:

  • Hydraulic clamping and adjustment style.

Countershaft Box:

  • Flange modification for "O" ring seal.
  • Appears to be in excellent condition.
  • Pinion gear is very good.
  • Bushing to specification.


  • Socket fit was tight when socket was removed.
  • Socket liner is in excellent condition.


  • Hydraulic console and cylinders were test run in the shop.  Holding good pressure.


  • Head ball is in very good condition and to specification
  • Wipers are good, worn approximately .250".
  • Grease seal.
  • Used mantle is currently installed.
  • Shaft fit is very good with no signs of movement.


  • Appears to be in good condition.
  • Threads are approximately 70% of new.
  • Hydraulic clamping was test run and holds good pressure.
  • A bowl liner is currently installed and looks in very good condition. (Coarse Bowl).

Socket Sealing Ring:

  • Excellent condition.


  • Inner bushing in very good condition.
  • Gear teeth are very good.


  • Hydraulic conversion to Innotech tramp, clearing and adjust with new hydraulic console.